1) Why are ball python eyes tinted blue sometimes? 2) What are the holes outside a ball python's mouth and what are they for? How do you call them?3) Do snakes have lungs?4) Since snakes are long tubes... where is a snake's heart placed? 5) How are a ball pyton's scales attached to each other?6) How many types of scales do snakes have and what are these types for?7) Do snakes have lymph nodes?

1) Ball pythons eyes become tinted blue when they are about to shed soon. 2) Those holes are called "labial pits" (or "heat pits"); they are important in hunting and thermoregulation because they contain heat-sensing organs.3) Of course! How would snakes be able to live without lungs? 4) The heart is placed within the first 25 percent of the snake's elongated body, along with the head, the esophagus and trachea;5) Scales are attached to each other by soft skin which is can't be noticed from the outside. The skin folds inward between each adjacent scale. Scales themselves cannot stretch, but when a snake eats a large meal (and in most cases its diameter is more than that of a snake), the skin folds are pulled out expanding a snake's body surface.6) Two. Top and side scales are small and can overlap. Bottom scales are short and wide.